17.20.060   Applicability of methodology.
   A.   The methods used to measure, test, analyze, and evaluate a quantity or quality associated with a performance standard shall be consistent with, and equivalent to EPA test methods.
   B.   This section shall apply to the determination, measurement, and evaluation of ambient air quality, emissions opacities, mass concentrations of emissions, dispersion modeling of air quality, mass-emissions discharge rates, and heat contents of fuels.
   C.   If measurement of emissions or ambient-air quality is required and an applicable test method is not specified herein, the control officer must approve an appropriate method in advance of the test in order for the results of the test to be acceptable.
   D.   When the control officer determines that compliance with quantitative mass-emissions limitations may be demonstrated more practically by long-term process usage rates and material-balance methods, the analyses shall be made on an average weight per unit-time basis or other basis specified by the control officer.
   E.   If more than one emissions limit is specified for a given pollutant for the source, the material-balance or other average emissions rate analysis must demonstrate compliance with the limitation yielding the lowest emissions.
(Ord. 1993-128 § 5 (part), 1993)